Highgrove is the unincorporated pocket wedged between Riverside's Northside, Grand Terrace, and the San Bernardino County line, where the Santa Ana River comes out of the gap between the Box Springs Mountains and the Jurupa Hills. It was citrus and a Santa Fe railroad siding into the 1960s, and the houses show it: 1920s to 1950s cottages and small ranch homes on the older streets near Center Street, 1970s and 1980s slab tracts toward Iowa Avenue, and a few 2000s tracts on the hillside above. About 5,000 people live here.
The river bottom runs along Highgrove's west edge, and Springbrook Wash comes down from the Box Springs side through the middle of it. Storm water off the hills has nowhere to go but across the flats, and the January 2023 and February 2024 atmospheric rivers put water in garages along the low streets near the river. The old cottages are on their original galvanized or copper lines, and the slab tracts are at the age where the copper pits through.
This site routes Highgrove homeowners to an independent local water damage provider by phone. The provider meters the house before setting a scope.
River and wash water across a garage slab after a storm is storm flood cleanup. A warm floor in a 1970s tract house is a leak detection call, and the drying afterward is slab leak water damage work. A leak under a raised 1930s cottage drips into the crawl space and is checked from below.
Highgrove is unincorporated, so rebuild permits for drywall, plumbing, and wiring come from Riverside County, not the City of Riverside. The Riverside Transit Agency runs the bus line down Iowa Avenue that ties the neighborhood to downtown Riverside and the Metrolink station.
Call (951) 631-2989 and tell us what you found. We route the call to a local water damage provider serving Highgrove.
Standing water pulled off slab-floor tile, laminate, and carpet in a Riverside house, then the first meter readings to see how far it ran.
Air movers and dehumidifiers run until slab-side drywall, cabinets, and flooring hit their dry target, even on a cool, damp January week.
A warm tile, a spinning meter, or a soft wall traced to a pitted copper line under the slab or inside a wall before anyone cuts concrete.
Carpet, laminate, and the bottom of the walls soaked by a line that failed under the slab, dried out and documented once the plumber has it stopped.
Muddy street runoff and Santa Ana River bottom water pulled out of a garage or ground floor after an atmospheric river, with contaminated materials removed.
A tank that let go in a garage, side-yard closet, or hall cabinet and the drywall and flooring it soaked on the way across the slab.
A stained, sagging, or dripping ceiling under a second-floor bath, a roof-mounted swamp cooler, or an attic air handler, dried and opened only where wet.
Wet attic insulation, ceilings, and walls dried out after Santa Ana winds lifted tile or a winter storm found the valley flashing.